Liquid-feeding apparatus



F-. H. WAGNER.

LIQUID FEEDING APPARATUS.

APPLICATION FILED OCT. 2. 1916.

Patented May 10, 1921.

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UNITED STATES PATENT- OFFICE.

FREDERICK II. WAGNER, 0F BALTIMORE, MARYLAND, ASSIGNOR To THE BARTLETTHAYWARD COMPANY, OF BALTIMORE, MARYLAND, A CORPORATION LAN D.

0F MARY- LIQUID-I EEDING APPARATUS.

Specification of Letters Patent.

Patented May 10, 1921.

Application filed October 2, 1916. Serial No. 123,247.

To allwhom it may concern:

Be it known that I, FREDERICK H. VVACNER, a citizen of the UnitedStates, re- Siding at Baltimore city, in the State of Maryland, haveinvented certain new and useful Improvements in Liquid-FeedlngApparatus, of which the following is a specification.

This invention relates to an improved apparatus for feedingliquid-continuously at a predetermined rate.

The apparatus may be employed to continuously feed or discharge apredetermined quantity of liquid in a predetermined tlme, such forexample as a definite number of gallons per hour, and is not restrictedin its use to any definite art or manufacture, but may be employedwherever it is desired or applicable.

One object therefore of the present invention is to provide an improvedapparatus that will feed or discharge a predetermined quantity of liquidin a predetermined time; that will feed or discharge the liquidcontinuously: that may be adjusted to vary the quantity of liquid fed ordischarged and in which the pressure on the discharge is uniformthroughout its operation.

With these, and other objects in view, the invention is illustrated inthe accompanying drawing, wherein,-

Figure 1 shows the improved apparatus in vertical longitudinal section,and

Fig. 2, a horizontal sectional detail through the overflow tubes; scalebar and one side of the liquid receptacle,the section being taken in theline 22 of Fig. 1.

Referring to the drawing by numerals, 3, designates a cylindricalreceptacle which is designed to be secured in a vertical positionthrough the bracket, 4, and threaded sockets, 5, and which is preferablyleft open at the upper end, 6, so that the fluid or liquid to be fed maycontinuously flow into the said upper open end.

Near the bottom, the receptacle has a side port, 7, which communicateswith a horizontal passage, 8, that is formed through a side bracket, 9,and they outer end of this passage opens into an annular chamber, 10, sothat continuous communication is maintained between the receptacle andthe annular chamber.

A glass tube, 11, extends vertically from 'munication with the saidchamber.

present instance, is supported by means of v a bracket, 14, thatprojects from the side of the receptacle.

It will be understood, from theforegoing in communication with thereceptacle through the passage, 8, and annular chamber 10.

An inner tube, 15, extends vertically through the glass tube, 11, andsaid inner explanation, that the glass tube, 11, is always tube has itslower end also extending down through the annular chamber, 10, and thenthrough a stufling box, 16, so that the extreme lower end, 17 of saidinner tube projectsbelow said stuffing box.

This inner tube, 15, by reason of the stufling box, maybe verticallyadjusted in the outer or glass tube, 11, so that the height of its upperend, 18, which is left open, may be changed with respect to the Outertube. The inner tube, 15, is an overflow tube so that the liquid mayrise in the outer glass tube until it reaches the upper open end of theinner tube, whereupon the liquid will overflow into, and pass downthrough, said inner overflow-tube and run OH to any desired point. Thisoverflow, however, is not the measured liquid, as will presently beseen.

The stufling box, 16, has a screw cap, 19, through which the lower endof the over flow tube passes, so that by loosening said cap, and freeingthe packing in said box, the overflow tube may be-moved vertically withrespect to the outer tube, and during such movement, the upper end ofthe overflow tube may be clearly seen through the glass outer tube, 11,and the height thereof definitely located during the adjustment.

- At one side of the outer glass tube 11, I sustain a scale-bar, 20. Inthe present instance, the scale-bar extends vertically between the glasstube, 11, and the side of the cylindrical receptacle, 3, and the lowerend thereof is provided with a pin, 21 that enters a socket in the upperside of the present'instance, the scale-bar is square in cross-sectionwhereby to provide a plurality of flat faces on which scale-lines may bebracket, 9, thereby forming a step-like bearing at said lower end. Theupper end of the scale-bar is rotatably connected to the.

bracket, 14, by a screwor pin, 22. In the located. The number of sidesor faces which the scale-bar may have, however, may vary.

and maybe more or less than shown. it

being desirable to provide a plurality of faces, so that several scalesmay be accessible on the one bar. 7

The lower end of the cylindrical receptacle, 3, has an annular dependingflange,

23, which forms a circular chamber, 24, which latter has unrestrictedand continuous communication withthe interior of the receptacle. Aflanged cap, 25, telescopically fits the flange, 23, of the receptacleand is adjustably sustained about the same by means of bolts, 26, andwing-nuts, 27, and a discharge-nozzle or pipe, 28, is connected to thecap, 25, and provides an outlet from the innerto the outer side of saidcap.

Between the cap and the circular chamber, 24, I interpose one or moredisks, 29," each of which latter is provided with a cen' tralperforation, 30, for the escape of liquid from the chamber, '24, to thenozzle or 'pie28.

vperforation is lowermost.

ile I have shown, in the present instance,- four disks 29, itwill benoted that the perforations in the disks vary in diameter, and that thedisk with the smallest- In some instances however, I may employ only onedisk at a time, which disk will have the size of perforation desired tocontrol the disk has a perforation of one-fourth of an "inch in diameterand the other disk has'a perforation of five-sixteenths of an inch indiameter.

Obviously, the disk employed having the smallest perforation, willcontrol-the discharge of liquid from the receptacle and such dischargewill be uniform, only, provided, the helght of the column of liquid inthe receptacle, 3, and consequentlythe pressure of the liquid at theperforation in the controlling disk, is-maintalned uniform. Tothereforemaintain the column of liquid at a uniform height in the receptacle, 3,I provide the outer tube, 11, and the inner overflow tube, 15, it beingunderstood that liquid is being fed by a pipe, 31, into the receptacle3, faster than it will discharge through the perforation in the diskemployed in the chamber, 24, and consequently the overflow tube willmaintain the column of liquid at a uniform level and at-a uniformpressure on the perforated disk.

If it were intended that a fixed and definite quantity of liquid perhour always be discharged from the apparatus, a change of disks, or achange in the height and the pressure of the liquid columns, would beunnecessary, and the single disk and a definite and fixed location ofthe upper end of the overflow tube would suflice. This, however, is notthe case, for the reason that the apparatus could only be used for thedischarge of a fixed quantity, at all times and if a different quantitybe desired another appa-' able overflow and I make provision for achange'of disks. 'Whei1-a change of disk is made however, it may benecessary to change the height of the overflow tube, and to de-" termineexactly the proper height of the overflow tube, I provide the scale bar20. Each side of the scale bar has a scale that differs from the scaleon any other side of said bar and each scale is made to conform 'to thesize of the perforation in a disk. For

example, suppose the disk having the one-' eighth inch hole is desired,and that it is desired to feed, say, fourteen gallons of liquid perhour. ployed. with the disk having the one-eighth ratus would have to beused. To provide for varying the quantity, I employ the adjust-' Thescale designed to be emof an inch perforation, will bear charactersindicating that it is the one-ei hth scale, as shown, for example at,32. f it is therefore desiredto feed liquid through the oneeighth of aninch perforation at the'rate of fourteen gallons per hour, the upperend, 18,

of the overflow tube, 15, will'be adjusted to register with thatscale-line adjacent to the numeral fourteen on said one-eighth scale.

For twelve gallons per hour the tube, 15, will be lowered until its end,18, is brought into alinement with the scale-line adjacent the numeraltwelve on said scale. If it is desired to feed a greater quantity ofliquid per hour then the one-eighth inch perforated disk will beremoved, and a disk having alargerperforation will'be employed and theoverflow tube willthen be adjusted to thescale forfthe particular diskemployed.

For conveniencein opening a perforation in case the latters'hould becomeclogged, I

provide a steam pipe, 33, through which a jet of steam may be directedagainst the clo ed disk.

aving described my invention, what I claim is,'-. w

91.; In a liquid-feed apparatus, the combination with a receptaclehaving two outlets one of a greater capacity than the other, of meansfor varying the size of the outlet of the lesser capacity to one of aplurality of predetermined sizes at a time; a tube having continuouscommunication with the outlet of the greater capacity; an adjustableoverflow tube in said tube, and a scale for each size of outlet of theplurality of sizes where by a predetermined quantity of liquid may bedischarged in a given time by adjusting the overflow tube in accordancewith the scale for the size of outlet employed.

2. I11 a liquid-feed apparatus, the combination with a receptacle havingtwo outlets one of greater capacity than the other; means for definitelychanging the size of the outlet of lesser capacity to one of a pluralityof predetermined sizes; an overflow tube through which the liquidpassing through the outlet of greater capacity may flow; means forpermitting the overflow tube to be adjusted to vary the height of thecolumn of liquid in the receptacle and to maintain a uniformpredetermined pressure at the outlet of lesser capacity, and a scale foreach predetermined size of outlet by which the overflow tube may beadjusted to produce flee discharge of a predetermined quantity of liquidin a predetermined period of time.

3. In a liquid-feed apparatus, the combination with a receptacle to holdliquid,-said receptacle having an outlet, of a glass tube exterior tothe receptacle and communicating with the latter; a scale-bar having aplurality of scales thereon and extending parallel with the glass tube;means for changing the size of the receptacle-outlet; an overflow tubeextending vertically in the glass tube and means for vertically adjust--ing the overflow tube according to the said scale. y

In testimony whereof I aflix my signature in the presence of twowitnesses.

FREDERICK H. WAGNER.

Witnesses PAUL M. KUEHN, R. B. HOOPER.

